Keen dreams is a side-scrolling shooter like the rest of the games in the Commander Keen series. Sitting at the table with his parents, Billy Blaze just won't eat his vegetables and is sent to bed. Soon he falls asleep and has horrible nightmares about vegetables attacking him and he doesn't even have his stun pistol! A Tater Trooper explains to Keen that he was brought to the land of Tuberia by the Dream Machine and that his new master is the massive potato Boobus Tuber. Thus begins Keen's journey to save himself and escape from Tuberia. To succeed Keen needs to defeat Boobus Tuber and destroy the Dream Machine. It won't be easy! This is sometimes referred to as the "Lost Episode" of Commander Keen. According to Joe Siegler of Apogee, he called Keen Dreams as the "Keen Episode 3.5." The reason stated for this is that Keen Dreams falls between the Invasion of the Vorticons series (comprising Keen 1:Marooned on Mars, Keen 2:The Earth Explodes & Keen 3:Keen Must Die) and the Goodbye galaxy series (comprising Keen 4:Secret of the Oracle & Keen 5:The Armageddon Machine).